JPH04127500A - Automatic selection backup device for printed wiring board - Google Patents

Abstract

PURPOSE:To automatically set backup pins for supporting a printed wiring board by specifying backup pins arranged in a lattice state at equal intervals, and backup pins to be raised according to the type of a printed wiring board. CONSTITUTION:Backup pins 10 the number of which is mXn are disposed in a lattice state at equal intervals to be independently vertically moved by backup pin drivers 20. Sensors 41 are stood at the same positions as those of the pins 10 at an electronic component detecting position to detect an electronic component P at each sensor 41, and send information from detectors 40 to a controller 30. The controller 30 stores set position data of the pins 10 determined at the respective types of the printed wiring boards 1. The setting position of the pin 10 is decided, the driver 20 is driven to lift the designated pin 10, thereby supporting the board 1.

Description

[Detailed Description of the Invention] [Summary] A backup method for supporting a printed wiring board from below with backup pins to prevent distortion and warpage of the printed wiring board when automatically inserting and automatically mounting electronic components on the printed wiring board. Regarding the device, the purpose is to provide a printed wiring board automatic selection backup device that can automatically set backup pins for each type of printed wiring board, and has mXn pins arranged in a grid at equal intervals. It is equipped with a control section that specifies the backup pin to be raised depending on the backup pin and the model of the printed wiring board, and a backup bin drive section that raises the specified backup pin according to instructions from the control section. The configuration is configured to automatically select and set the backup pin according to the model.

[Industrial Application Field] The present invention provides a backup method for supporting a printed wiring board from below with backup pins to prevent distortion and warping of the printed wiring board when electronic components are automatically inserted and mounted on the printed wiring board. Regarding equipment.

When automatically inserting and mounting electronic components onto a printed wiring board, or when applying adhesive for temporary fixing of electronic components, it is necessary to prevent distortion or warping of the printed wiring board, or to prevent vibrations. The printed wiring board is supported from below with backup pins to prevent it from being damaged.

When the model of the printed wiring board changes, it is necessary to change the position of the backup pin.

Recently, electronic components have become smaller and printed wiring boards have become more densely packaged, and electronic components are increasingly mounted on both sides.

In the case of such a double-sided printed wiring board, it is necessary to erect backup pins in areas where no electrical components are mounted in order to prevent damage to the electronic components.

Among such backup devices, there is a need for an automatic selection backup device that can easily set backup pins even if the model changes.

[Conventional technology]

FIG. 6 shows a diagram illustrating a conventional backup pin.

The conventional example shown in FIG. 6 includes a backup pin 11, a support rod 13 that holds the backup pin 11 and has a long hole 12 that allows the position of the backup pin 11 to be adjusted in the radial direction and rotational direction, and the support rod 13. This is an example in which a screw 14 is used to fix the screw 13.

11 backup pins for every 10 types of printed wiring boards
The positions where the back-up pins 11 are erected are specified, and usually about 5 to 8 backup pins 11 are erected.

Therefore, when the production model of the printed wiring board 1 changes, the support rod 13 is adjusted in the radial direction and rotational direction, and the backup pin 11 is set at the position specified for each model.
Fix it by.

[Problem to be solved by the invention]

In the conventional example described above, since the backup pin 11 is erected on the back surface of the printed wiring board 1, it is difficult for the operator to see its position and adjustment is difficult.

Furthermore, in high-mix, low-volume production, the production model is changed many times, and the position of the bank-up bin 11 needs to be changed accordingly, so it takes a long time to set the backup pin as a whole.

Furthermore, when mounting surface mount components (hereinafter referred to as SMD components) on both sides, if an SMD component is already mounted on the bank up pin side (back side) using temporary adhesive, the back-up pin 11 should be accurately mounted. If the position is not set, it may cause damage to the SMD parts.

SUMMARY OF THE INVENTION An object of the present invention is to provide a printed wiring board automatic selection backup device that can automatically set backup pins for each type of printed wiring board.

[Means to solve the problem] FIG. 1 shows a detailed illustration of the invention.

In the principle diagram of the present invention shown in FIG. 1, 1 is a printed wiring board, P is an electronic component, IO is mXn backup pins arranged in a lattice shape at regular intervals, and 30 is a printed wiring board. 20 is a control unit that specifies the backup pin 10 to be raised according to the model of the board 1, and 20 is a control unit that specifies the backup pin 10 to be raised according to the model of the board 1.
This is a backup pin drive unit that raises only 0, and is a means for solving this problem by automatically selecting and setting the backup pin 10 according to the model of the printed wiring board 1.

[Function] The position where the backup pin 10 is erected is such that it will not come into contact with the electronic component P that has been temporarily fixed in advance.

Therefore, by driving the backup pin drive unit 20 by the control unit 30 to raise only the backup pins 10 at positions determined for each model of the printed wiring board 1, the selection setting of the backup pins 10 is automatically performed. It becomes possible to do this.

〔Example〕

The gist of the present invention will be specifically explained below with reference to embodiments shown in FIGS. 2 to 5.

FIG. 2 is a diagram explaining the present invention in detail, FIG. 3 is a diagram explaining another embodiment of the present invention, FIG. 4 is a diagram explaining a system block diagram of the embodiment of the present invention, and FIG. 2A and 2B show diagrams illustrating the structure of a backup pin according to an embodiment of the present invention, respectively. Note that the same reference numerals indicate the same objects throughout the figures.

In the embodiment shown in FIG. 2, 1 is a printed wiring board, P is an electronic component, 10 is a backup pin, 20 is a backup pin drive section, 30 is a control section, 40 is a detection section, and 41 is a sensor.

The backup pins 10 are arranged in a lattice shape at regular intervals, and each one is independently connected to a backup pin drive unit 20.
Make sure you can move it up and down.

First, at the electronic component detection position, a sensor 41 is installed at the same position as the backup pin 10, and each sensor 41 detects the presence or absence of an electronic component P, and sends the information from the detection section 40 to the control section 30.

At the next backup position of the stage, the control section 30 drives the backup pin drive section 20 to raise the backup pin 1o at a position where no electronic component P is present to perform backup.

The figure shows a state in which the backup pin 10 facing the electronic component P is not raised.

FIG. 3 shows an example in which a barcode label 42 and a barcode reader 43 are used in place of the sensor 41 and detection unit 40 shown in FIG.

The control unit 30 stores in advance setting position data of the backup pins 10, which is determined for each model of the printed wiring board 1.

First, the barcode reader 43 reads information on the barcode label 42 on the printed wiring board 1 and sends the information to the control section 30.

The control unit 30 compares the read barcode information with stored information, determines the setting position of the backup pin 10, and drives the backup pin drive unit 20 to drive the specified backup pin 10. It is raised to support the printed wiring board 1.

FIG. 4 is a system block diagram that allows control of FIGS. 2 and 3.

The detection unit 4 detects the presence/absence information of the electronic component P detected by the sensor 41.
0 (not shown), the computer 3 through the sequencer 32
1, determine the set position of the backup pin 10 on the computer 31, drive the backup pin drive unit 20 through the sequencer 32, and set the backup pin 1.
Increase 0 and perform backup.

When using a barcode, the barcode reader 43 reads the information on the barcode label 42 on the printed wiring board 1, inputs it to the personal computer 31, and sends it to the sequencer 32.
Drive the backup pin drive section 20 through the
The backup pin 10 is raised to perform backup.

FIG. 5 shows an example of the structure of the backup pin, in which the backup pin 10 is divided into two parts, and a spring IOA is provided in the middle to absorb the warpage of the printed wiring board 1 and keep the supporting pressure constant. I have to.

In addition, the lower part of the backup bin 10 is connected to an air cylinder I.
It is connected to the OB and is moved up and down by a solenoid valve (not shown) controlled by the drive section 20.

By configuring as described above, it is possible to automatically set the position of the backup pin in a short time, and furthermore, it is possible to prevent damage to electronic components due to a mistake in manually attaching the backup pin.

(Effects of the Invention) According to the present invention as described above, it is possible to provide an automatic selection backup device for a printed wiring board that can automatically set the position of a backup pin.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the present invention in detail, FIG. 2 is a diagram explaining the invention in detail, FIG. 3 is a diagram explaining other embodiments of the invention, and FIG. 4 is a diagram explaining the present invention. FIG. 5 is a diagram illustrating the structure of a backup bin according to an embodiment of the present invention, and FIG. 6 is a diagram illustrating a conventional backup pin. In the figure, 1 is a printed wiring board, P is an electronic component, 10.11 is a backup bottle, 10A is a spring, 10B is an air cylinder, 12 is a long hole, 13 is a support rod, 14 is a screw, 20 is a backup pin drive unit , 30 is a control unit, 31 is a personal computer, 32 is a sequencer, 40 is a detection unit, 41 is a sensor, 42 is a barcode label, and 43 is a barcode reader. Figure 5 shows the structure of the backup engine according to the embodiment of the present invention.

Claims (3)

[Claims] (1) When automatically inserting and automatically mounting electronic components (P) on the printed wiring board (1), the printed wiring board (1)
A device that automatically sets backup pins (10) that support the printed wiring board (1) from below in order to prevent distortion and warpage of the printed wiring board (1), the device having m×n pins arranged in a grid pattern at regular intervals. A control unit (3) that specifies the backup pin (10) of the book and the backup pin (10) to be raised depending on the model of the printed wiring board (1).
0), and a backup pin drive unit (20) that raises the specified backup pin (10) according to instructions from the control unit (30), and
), the backup pin (1
0) An automatic selection backup device for a printed wiring board, characterized in that it performs the selection setting of 0). (2) m×n sensors arranged in a grid at equal intervals (
41), the m×n sensors (41) detect the component mounting position, and the detection unit (40) sends the result to the control unit (30). , the control unit (30) controls the backup pin (1).
2. The automatic selection backup device for a printed wiring board according to claim 1, wherein the backup position of step 0) is selectively set. (3) A barcode label (42) for displaying the model on the printed wiring board (1) and a barcode reader (43) for reading information on the barcode label (42) are provided, and the barcode label (42) information is read by the barcode reader (43), the read barcode information is sent to the control section (30), and the control section (30)
The automatic selection backup device for a printed wiring board according to claim 1, wherein the backup position of the backup pin (10) is selectively set.